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<html lang="en">

<head>
    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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</head>

<body>
    <div class="content"></div>
    <button id="btn">click</button>
    <script>
        $('#btn').click(() => {
            $.get({
                url: 'http://localhost:3000',
                success: (res) => {
                    console.log(JSON.parse(res))
                    $('.content').html(res)
                },
                fail: (err) => {
                    console.log(err)
                }
            })
        })
    </script>
</body>

</html>